(19)
(11) EP 1 085 636 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.12.2002 Bulletin 2002/51

(43) Date of publication A2:
21.03.2001 Bulletin 2001/12

(21) Application number: 00118905.9

(22) Date of filing: 31.08.2000
(51) International Patent Classification (IPC)7: H02J 3/00
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 13.09.1999 JP 25847199

(71) Applicant: Hitachi, Ltd.
Chiyoda-ku, Tokyo 101-8010 (JP)

(72) Inventors:
  • Yabutani, Takashi
    Hitachinaka-shi, Ibaraki 312-0062 (JP)
  • Miyabe, Takaaki
    Mito-shi, Ibaraki 311-1115 (JP)
  • Abe, Atsushi
    Hitachi-shi, Ibaraki 319-1417 (JP)
  • Yamamoto, Yuji
    Hitachi-shi, Ibaraki 316-0026 (JP)
  • Fujigaki, Tetsuo
    Hitachi-shi, Ibaraki 316-0032 (JP)
  • Yabuno, Taichirou
    Hitachi-shi, Ibaraki 316-0032 (JP)
  • Sato, Kazuo
    Hitachi-shi, Ibaraki 316-0022 (JP)

(74) Representative: Strehl Schübel-Hopf & Partner 
Maximilianstrasse 54
80538 München
80538 München (DE)

   


(54) Energy saving service offering method and apparatus therefor


(57) An energy saving service offering method and apparatus are disclosed. In which a present electric power consumption of a supervised load facility of a user (contractor A) who owns (contractor B) the supervised load facility including a motor and attempts to save energy, and an inverter control operation data when installing an inverter in the supervised load facility and performing the revolution control operation are provided. Further, a merit refund corresponding to a saved electric power consumption by referring to a difference between said present electric power consumption data and the inverter control operation data is provided. Finally, a charge and billing operation by respecting the merit refund to a contract conditions established between a energy saving service provider and its contractor is performed.






Search report